I've tried editing the wiki, but it's given me nothing but problems, probably my fault though. I just tried to post the the Guides section and I'm not allowed there yet, so I'll post my guide here and hope someone smarter than I will be able to get this on the Wiki. Next I'll write up an Ubuntu Linux HOWTO if that would be helpful to anyone:

DosBox FreeBSD HOW-TO

1.) Getting DosBox on your System
From a command prompt become the super user by typing, su
Or if you have sudo set up use that to execute the following command:
Now type pkg_add -r dosbox (or sudo pkg_add -r dosbox)
Once DosBox is on your system type, rehash to be able to use it.
Note: DosBox is also located in the ports tree:
cd /usr/ports/emulators/dosbox
make install clean
2.) Mounting a directory as C:\
From the command prompt go to a directory where you are allowed to write data
such as your home directory:
cd /home/username
Now type:
dosbox
The DosBox emulator will now open up and you will have a Z:\ prompt
To mount your directory as C:\ type:
mount c /home/username
Now your home directory will be the C:\ drive for DosBox
It is importatn to mount a directory you can write to as C: if you
plan on installing any software.
3.) Mounting a CD-ROM
First mount the CD-ROM as you normally would with FreeBSD from a
non-DosBox command prompt:
mount /cdrom or mount -t cd9660 /dev/acd0 /cdrom
Now in DosBox type
mount d /cdrom -t cdrom

4.) Let's put it all together
Here is the complete set of commands to get TIE Fighter up and running
assuming that you do not have DosBox installed or anything. When you
see <enter> press the enter key:

su password <enter>
pkg_add -r dosbox <enter>
rehash <enter>
*place CD-ROM into the CD-ROM drive*
mount -t cd9660 /dev/acd0 /cdrom <enter>
dosbox <enter>
*you are now inside the DosBox emulator*
mount c /home/username <enter>
mount d /cdrom -t cdrom <enter>
d: <enter>